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-rw-r--r--init/main.c83
1 files changed, 55 insertions, 28 deletions
diff --git a/init/main.c b/init/main.c
index af310afbef28..eb03090cdced 100644
--- a/init/main.c
+++ b/init/main.c
@@ -76,6 +76,7 @@
#include <linux/elevator.h>
#include <linux/sched_clock.h>
#include <linux/context_tracking.h>
+#include <linux/random.h>
#include <asm/io.h>
#include <asm/bugs.h>
@@ -91,17 +92,11 @@ static int kernel_init(void *);
extern void init_IRQ(void);
extern void fork_init(unsigned long);
-extern void mca_init(void);
-extern void sbus_init(void);
extern void radix_tree_init(void);
#ifndef CONFIG_DEBUG_RODATA
static inline void mark_rodata_ro(void) { }
#endif
-#ifdef CONFIG_TC
-extern void tc_init(void);
-#endif
-
/*
* Debug helper: via this flag we know that we are in 'early bootup code'
* where only the boot processor is running with IRQ disabled. This means
@@ -123,7 +118,6 @@ EXPORT_SYMBOL(system_state);
extern void time_init(void);
/* Default late time init is NULL. archs can override this later. */
void (*__initdata late_time_init)(void);
-extern void softirq_init(void);
/* Untouched command line saved by arch-specific code. */
char __initdata boot_command_line[COMMAND_LINE_SIZE];
@@ -131,11 +125,20 @@ char __initdata boot_command_line[COMMAND_LINE_SIZE];
char *saved_command_line;
/* Command line for parameter parsing */
static char *static_command_line;
+/* Command line for per-initcall parameter parsing */
+static char *initcall_command_line;
static char *execute_command;
static char *ramdisk_execute_command;
/*
+ * Used to generate warnings if static_key manipulation functions are used
+ * before jump_label_init is called.
+ */
+bool static_key_initialized __read_mostly = false;
+EXPORT_SYMBOL_GPL(static_key_initialized);
+
+/*
* If set, this is an indication to the drivers that reset the underlying
* device before going ahead with the initialization otherwise driver might
* rely on the BIOS and skip the reset operation.
@@ -273,7 +276,7 @@ static int __init unknown_bootoption(char *param, char *val, const char *unused)
unsigned int i;
for (i = 0; envp_init[i]; i++) {
if (i == MAX_INIT_ENVS) {
- panic_later = "Too many boot env vars at `%s'";
+ panic_later = "env";
panic_param = param;
}
if (!strncmp(param, envp_init[i], val - param))
@@ -285,7 +288,7 @@ static int __init unknown_bootoption(char *param, char *val, const char *unused)
unsigned int i;
for (i = 0; argv_init[i]; i++) {
if (i == MAX_INIT_ARGS) {
- panic_later = "Too many boot init vars at `%s'";
+ panic_later = "init";
panic_param = param;
}
}
@@ -346,8 +349,11 @@ static inline void smp_prepare_cpus(unsigned int maxcpus) { }
*/
static void __init setup_command_line(char *command_line)
{
- saved_command_line = alloc_bootmem(strlen (boot_command_line)+1);
- static_command_line = alloc_bootmem(strlen (command_line)+1);
+ saved_command_line =
+ memblock_virt_alloc(strlen(boot_command_line) + 1, 0);
+ initcall_command_line =
+ memblock_virt_alloc(strlen(boot_command_line) + 1, 0);
+ static_command_line = memblock_virt_alloc(strlen(command_line) + 1, 0);
strcpy (saved_command_line, boot_command_line);
strcpy (static_command_line, command_line);
}
@@ -466,7 +472,7 @@ static void __init mm_init(void)
mem_init();
kmem_cache_init();
percpu_init_late();
- pgtable_cache_init();
+ pgtable_init();
vmalloc_init();
}
@@ -555,6 +561,7 @@ asmlinkage void __init start_kernel(void)
init_timers();
hrtimers_init();
softirq_init();
+ acpi_early_init();
timekeeping_init();
time_init();
sched_clock_postinit();
@@ -574,7 +581,8 @@ asmlinkage void __init start_kernel(void)
*/
console_init();
if (panic_later)
- panic(panic_later, panic_param);
+ panic("Too many boot %s vars at `%s'", panic_later,
+ panic_param);
lockdep_info();
@@ -631,7 +639,6 @@ asmlinkage void __init start_kernel(void)
check_bugs();
- acpi_early_init(); /* before LAPIC and SMP init */
sfi_init_late();
if (efi_enabled(EFI_RUNTIME_SERVICES)) {
@@ -692,7 +699,7 @@ int __init_or_module do_one_initcall(initcall_t fn)
if (preempt_count() != count) {
sprintf(msgbuf, "preemption imbalance ");
- preempt_count() = count;
+ preempt_count_set(count);
}
if (irqs_disabled()) {
strlcat(msgbuf, "disabled interrupts ", sizeof(msgbuf));
@@ -744,9 +751,9 @@ static void __init do_initcall_level(int level)
extern const struct kernel_param __start___param[], __stop___param[];
initcall_t *fn;
- strcpy(static_command_line, saved_command_line);
+ strcpy(initcall_command_line, saved_command_line);
parse_args(initcall_level_names[level],
- static_command_line, __start___param,
+ initcall_command_line, __start___param,
__stop___param - __start___param,
level, level,
&repair_env_string);
@@ -780,6 +787,7 @@ static void __init do_basic_setup(void)
do_ctors();
usermodehelper_enable();
do_initcalls();
+ random_int_secret_init();
}
static void __init do_pre_smp_initcalls(void)
@@ -804,15 +812,31 @@ void __init load_default_modules(void)
static int run_init_process(const char *init_filename)
{
argv_init[0] = init_filename;
- return do_execve(init_filename,
+ return do_execve(getname_kernel(init_filename),
(const char __user *const __user *)argv_init,
(const char __user *const __user *)envp_init);
}
+static int try_to_run_init_process(const char *init_filename)
+{
+ int ret;
+
+ ret = run_init_process(init_filename);
+
+ if (ret && ret != -ENOENT) {
+ pr_err("Starting init: %s exists but couldn't execute it (error %d)\n",
+ init_filename, ret);
+ }
+
+ return ret;
+}
+
static noinline void __init kernel_init_freeable(void);
static int __ref kernel_init(void *unused)
{
+ int ret;
+
kernel_init_freeable();
/* need to finish all async __init code before freeing the memory */
async_synchronize_full();
@@ -824,9 +848,11 @@ static int __ref kernel_init(void *unused)
flush_delayed_fput();
if (ramdisk_execute_command) {
- if (!run_init_process(ramdisk_execute_command))
+ ret = run_init_process(ramdisk_execute_command);
+ if (!ret)
return 0;
- pr_err("Failed to execute %s\n", ramdisk_execute_command);
+ pr_err("Failed to execute %s (error %d)\n",
+ ramdisk_execute_command, ret);
}
/*
@@ -836,18 +862,19 @@ static int __ref kernel_init(void *unused)
* trying to recover a really broken machine.
*/
if (execute_command) {
- if (!run_init_process(execute_command))
+ ret = run_init_process(execute_command);
+ if (!ret)
return 0;
- pr_err("Failed to execute %s. Attempting defaults...\n",
- execute_command);
+ pr_err("Failed to execute %s (error %d). Attempting defaults...\n",
+ execute_command, ret);
}
- if (!run_init_process("/sbin/init") ||
- !run_init_process("/etc/init") ||
- !run_init_process("/bin/init") ||
- !run_init_process("/bin/sh"))
+ if (!try_to_run_init_process("/sbin/init") ||
+ !try_to_run_init_process("/etc/init") ||
+ !try_to_run_init_process("/bin/init") ||
+ !try_to_run_init_process("/bin/sh"))
return 0;
- panic("No init found. Try passing init= option to kernel. "
+ panic("No working init found. Try passing init= option to kernel. "
"See Linux Documentation/init.txt for guidance.");
}
generated by cgit v1.2.3 (git 2.0.4) at 2025-09-02 20:57:09 +0000